The Lincoln 1142 is a heavy duty lever action grease gun designed for automotive, industrial, and agricultural lubrication tasks. It features a cast iron pump head and can generate pressures up to 10000 PSI, with typical operating ranges of 6000 to 7000 PSI. The gun supports 14.5 oz cartridges or 16 oz bulk grease and delivers approximately 1 oz per 33 strokes using No. 1 grease at 70F. A flip over follower allows three way loading by cartridge, suction, or filler pump. The hardened precision plunger reduces bypass and airlock, while a jam proof toggle mechanism prevents plunger binding. The tool includes a 6 inch rigid extension and a 5852 hydraulic coupler. An accessible check valve allows cleaning contaminated grease without full disassembly, supporting long term reliability.